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303 Positive Displacement Pump

This positive displacement pump delivers 2.3 fl oz of resin and hardener per full stroke of the dispensing lever. For use with 105 Epoxy Resin® and 207 Special Clear Hardener® or 209 Extra Slow Hardener®. The 303 Positive Displacement Pump is robust and dispenses epoxy faster than any pump we’ve ever offered. It works by trapping a fixed amount of resin and hardener and then forcing (displacing) that trapped volume into the discharge pipe or system. This offers improved epoxy pumping performance because changes in viscosity due to temperature change are no longer an issue. The reservoirs hold two gallons of resin and one gallon of hardener.

Designed for Use with:

WEST SYSTEM| image: 303-Metering-Pump

Product Specifications:

Dispenses three parts resin and one part hardener (3:1) by volume.

  • Two separate parallel pump systems, one for the resin and one for the hardener
  • Single lever pump-system
  • Pump delivers 2.3 fl oz of resin and hardener per full stroke
  • Calibrated for WEST SYSTEM® 3:1 ratio epoxies (207 Special Clear Hardener or 209 Extra Slow Hardener)
  • Easily identified with a red base

Product Uses:

Streamlines the metering process for high-volume users

  • 105 Resin and 207 or 209 Hardeners
  • Quickly dispenses proper mix for large batch processes

Large Batch Mixing Methods


Modifying with fillers and additives makes WEST SYSTEM epoxy extremely versatile for a wide variety of bonding and coating applications. Epoxy can be thickened to the ideal consistency needed for a particular job. Epoxy thickened with adhesive (high-density) fillers strengthens structural bonds, bridges gaps, and fills voids. Epoxy thickened with fairing (low-density) fillers is easily sanded and shaped after it cures.


The term “laminating” refers to the process of bonding numbers of relatively thin layers, like plywood, veneers, fabrics or core material to create a composite. A composite may be any number of layers of the same material or combinations of different materials. Methods of epoxy application and clamping will differ depending on what you are laminating.

Dispensing & MixingWEST SYSTEM Epoxy